Datasheet

SN54BCT8240A, SN74BCT8240A
SCAN TEST DEVICES
WITH OCTAL INVERTING BUFFERS
SCBS067E – FEBRUARY 1990 – REVISED DECEMBER 1996
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
functional block diagram
Boundary-Control
Register
Bypass Register
Boundary-Scan Register
Instruction Register
TDI
TMS
TCK
TDO
TAP
Controller
V
CC
V
CC
One of Four Channels
14
12
13
11
V
CC
V
CC
V
CC
2A1
2Y1
19
7
V
CC
24
2OE
One of Four Channels
V
CC
1A1
1Y1
23
2
V
CC
1
1OE
Pin numbers shown are for the DW, JT, and NT packages.